Improvement in cop-builders



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' COP BUILDER.

No.185,834;.l A Patented Jan. 2,1877.

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WILLIAM B. PARKHURST, OF NORTHA ANDOVER, MASSACHUSETTS, ASSIGNOB TOk GEORGE L. DAVIS, JOHN A. WILEY, JOSEPH STONE, GEORGE G. DAVIS, JOSEPH H. STONE, ANI) JAMES H. DAVIS, OF SAME PLAGE.

IMPROVEMENT IN COP'BUILDERS.

` Specification forming part of Letters Patent )10.185,834, dated January 2, 1877; application led i January 1i), 1876.

1 0 all whom 'it may concern:

Be it known that I, WILLIAM B. PARK- HURs'r, of North Andover, iu the county ot' Essex and State of Massachusetts, have invented an Improvement in (lop-Builders, of

I that part ot' the vsame by which the ring or copping-rail, so'called, is operated by what is called the heart-cam, so as to build the bobbin with conical ends, the intermediate portion being cylindrical.

In mechanisms for this purpose which have been heretofore used, the movements given by the heart-cam have been imparted through block the chain or its equivalent was attached, by which the ring-rail or copping-rail,

as itis called, was operated, and by moving the block toward and from the fulcrum of the lever, a shorter or longer extent of movement was given to the means of vguiding the yarn on to the bobbin. But in this case, the radial l I movement of the block along the lever to vary the traverse of the ring-rail also varied the position of the chain or other device through `which the traverse motion was imparted, so

f much as todistort its movement, so that it required the form of the heart-cam to be also distorted, which could only partially remedy the diliculty, because the relative positions of the block at the beginning and finishing of '-j the bobbins were so different, while the form :of the cam must of necessity be constant.

This diiiculty is remedied by myimprovement, which consists in the use of a secondary lever in combination with the lever which is directly operated by the heart-cam, which secondary lever is connected with the other lever by the sliding block, which slides in both, and to which secondary lever the chain 4which works the ring or copping-rail is attached in a fixed position, so that the movement of the sliding block in the levers, to vary the extent of motion of the rail, does not aect the position ofthe chain, or require any distortion of the shape of the heart-cam, and

the movement imparted by it is correct forv the intervention of a lever, in which a sliding l its fulcrnm at B', and a roller, C, which works i block was arranged to move radially, to which upon the surface of the cam A, which imparts pin E works, which serves to connect the lever B with the secondary lever F, which works `alongside of the lever B. This lever has its fulcrum at F', and is also provided with a llong slot in which the wrist-pin E works,

which imparts an oscillating motion to this lever. G is a screw hung in suitable bearings upon the lever F, which works in a nut in the wrist-pin E, as shown, and serves to slide the wrist-pin and block D back and forth in the slots iu the levers. By this means the range of motion of the lever F may be varied, while the motion of the lever B is constant.

Upon the outer end of the screw G is xed a ratchet, H, with a suitable number of teeth, which is operated by a spring-pawl, I, which is attached to the other lever B, or some other part of the machine, which turns the ratchet one tooth at each vibration of the levers, as it moves past the pawl, and this turns the screw a certain distance at each traverse of the copping-rail, corresponding to the shortening of the traverse required for the proper building ofthe bobbin. J is the chain which leads to the mechanism which carries the ring or ccpping-rail in any usual way.

This method of combining the heart-cam,

levers, chain, and sliding connection of the levers, to graduate the movement of the ring or copping-rail, may be put in various forms, such as will best accommodate the construct-ion of other parts ofa spinning-machine, but the form especially shown and represented is believed to be a full embodiment of the principle and mode of operation of my invention.

What I claim is- 1. The combination of the heart-cam, the primary lever, the secondary lever, wif; the chain attached thereto in a fixed posit: n, and

the sliding connection of the ifwo levers, sub. stantially as described. p

2. The secondary lever having the chain or other equivalent means for imparting motion to the copping-rail or device for guiding the yarn onto the bobbin, attached to said lever in a fixed position, and a wrist-pin sliding radially therein for imparting a variable motion to said lever, co-operating substantially as described.

Executed January 4th, A. D. 1876.

WM. B. PARKHURST. Witnesses:

E. A. HEMMENWAY, WM. G. HIBBARD. 

